We are dealing with foreign material/foreign bodies from incoming product (raw meat). We make an all natural product and most of the product we receive is Grass Fed/Organic/Non-GMO. Because of the our process, all of the raw meat that we use must be frozen (or slightly tempered). This typically means that the product is in bulk, frozen blocks, weighing between 10lbs - 40lbs each, and we are unable to see the interior of the product until we have processed most of it, in a grinder.
We have been noticing rampant foreign material (plastic liners - not from our facility, hard pieces of plastic, gloves, wood). We are able to rule out our processing facility as the origin of the foreign material.
While we have our initial checks from our front line operators, there are times that the foreign material will migrate through our system and into our finished product.
Can anyone give me pointers or ideas on a better way to mitigate this risk? As of right now, my only tangible idea is to have the operators do a clean out every now and then to create a separation in order to contain a contamination. While this has helped to salvage product, I feel like this is intrusive but I have no other ideas.